package com.kayden.blog.common.utils;

import io.jsonwebtoken.Claims;
import io.jsonwebtoken.JwtParser;
import io.jsonwebtoken.Jwts;
import io.jsonwebtoken.io.Decoders;
import io.jsonwebtoken.security.Keys;
import lombok.extern.slf4j.Slf4j;
import org.springframework.util.StringUtils;

import java.security.Key;
import java.util.Map;

@Slf4j
public class JwtUtils {

    private static String SECRET_STRING = "kGmiTrem5gU1+BDOlwPssDpkP50fNObF/wygI8oEPTk=";
    private static Key key = Keys.hmacShaKeyFor(Decoders.BASE64.decode(SECRET_STRING));

    public static String getToken(Map<String,Object> claims){
        String compact = Jwts.builder().setClaims(claims).signWith(key).compact();
        return compact;
    }

    public static Claims parseToken(String token){
        if(!StringUtils.hasLength(token)){
            return null;
        }

        JwtParser build = Jwts.parserBuilder().setSigningKey(key).build();
        Claims claims = null;
        try{
            claims = build.parseClaimsJws(token).getBody();

        }catch(Exception e){
            log.error("token解析失败，token:"+token);

        }
        return claims;
    }

}
